Nothing major, the most interesting change is an optimization to rescan I/O APIC routes after an EOI VM-Exit when an interception of the EOI was necessary only because of an in-flight IRQ from the previous routing. The following changes since commit 45eb29140e68ffe8e93a5471006858a018480a45: Merge branch 'kvm-fixes-6.15-rc4' into HEAD (2025-04-24 13:39:34 -0400) are available in the Git repository at: https://github.com/kvm-x86/linux.git tags/kvm-x86-misc-6.16 for you to fetch changes up to 37d8bad41d2b0a7d269affb85979a8e4114e177a: KVM: Remove obsolete comment about locking for kvm_io_bus_read/write (2025-05-08 07:16:15 -0700) ---------------------------------------------------------------- KVM x86 misc changes for 6.16: - Unify virtualization of IBRS on nested VM-Exit, and cross-vCPU IBPB, between SVM and VMX. - Advertise support to userspace for WRMSRNS and PREFETCHI. - Rescan I/O APIC routes after handling EOI that needed to be intercepted due to the old/previous routing, but not the new/current routing. - Add a module param to control and enumerate support for device posted interrupts. - Misc cleanups. ---------------------------------------------------------------- Babu Moger (1): KVM: x86: Advertise support for AMD's PREFETCHI Borislav Petkov (1): KVM: x86: Sort CPUID_8000_0021_EAX leaf bits properly Dan Carpenter (1): KVM: x86: clean up a return Li RongQing (1): KVM: Remove obsolete comment about locking for kvm_io_bus_read/write Sean Christopherson (7): x86/msr: Rename the WRMSRNS opcode macro to ASM_WRMSRNS (for KVM) KVM: x86: Advertise support for WRMSRNS KVM: x86: Isolate edge vs. level check in userspace I/O APIC route scanning KVM: x86: Add a helper to deduplicate I/O APIC EOI interception logic KVM: VMX: Don't send UNBLOCK when starting device assignment without APICv KVM: x86: Add module param to control and enumerate device posted IRQs KVM: x86: Unify cross-vCPU IBPB Yosry Ahmed (4): x86/cpufeatures: Define X86_FEATURE_AMD_IBRS_SAME_MODE KVM: x86: Propagate AMD's IbrsSameMode to the guest KVM: x86: Generalize IBRS virtualization on emulated VM-exit KVM: SVM: Clear current_vmcb during vCPU free for all *possible* CPUs weizijie (1): KVM: x86: Rescan I/O APIC routes after EOI interception for old routing arch/x86/include/asm/cpufeatures.h | 2 ++ arch/x86/include/asm/kvm_host.h | 4 +++- arch/x86/include/asm/msr.h | 4 ++-- arch/x86/kvm/cpuid.c | 8 ++++++- arch/x86/kvm/ioapic.c | 7 ++---- arch/x86/kvm/ioapic.h | 2 ++ arch/x86/kvm/irq_comm.c | 37 +++++++++++++++++++++++++++----- arch/x86/kvm/lapic.c | 8 +++++++ arch/x86/kvm/svm/nested.c | 2 ++ arch/x86/kvm/svm/svm.c | 27 ++--------------------- arch/x86/kvm/svm/svm.h | 2 -- arch/x86/kvm/vmx/nested.c | 17 ++++----------- arch/x86/kvm/vmx/posted_intr.c | 7 +++--- arch/x86/kvm/vmx/vmx.c | 18 ++++------------ arch/x86/kvm/vmx/vmx.h | 3 +-- arch/x86/kvm/x86.c | 29 +++++++++++++++++++++++-- arch/x86/kvm/x86.h | 18 ++++++++++++++++ tools/arch/x86/include/asm/cpufeatures.h | 1 + virt/kvm/kvm_main.c | 3 --- 19 files changed, 120 insertions(+), 79 deletions(-)
